Tersoff, J., Jesson, David E. ORCID: https://orcid.org/0000-0003-0897-1445 and Tang, Wen-Xin 2010. Decomposition controlled by surface morphology during Langmuir evaporation of GaAs. Physical Review Letters 105 (3) , 035702. 10.1103/PhysRevLett.105.035702 |
Official URL: http://dx.doi.org/10.1103/PhysRevLett.105.035702
Abstract
When GaAs is heated in vacuum, it decomposes into Ga and As as it evaporates. Real-time in situ surface electron microscopy reveals striking bursts of “daughter” droplet nucleation and growth when coalescence of large “parent” droplets exposes nonplanar surface regions. We analyze the behavior, predicting a morphology-dependent congruent evaporation temperature. Based on this we propose a new approach for the self-assembly and positioning of quantum structures via droplet epitaxy, which we demonstrate at the proof-of-concept level.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Subjects: | Q Science > QC Physics |
Publisher: | American Physical Society |
ISSN: | 0031-9007 |
Last Modified: | 10 Nov 2022 13:36 |
URI: | https://orca.cardiff.ac.uk/id/eprint/48799 |
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